(CNN) -- At least 14 people were dead and four missing in the Philippines a day after Typhoon Mirinae roared through the heart of the country, the National Disaster Coordinating Council said Sunday.

Mirinae was the fourth typhoon to affect the archipelago of more than 7,000 islands in a month. It quickly dissipated after Saturday's landfall, becoming a tropical storm. Mirinae was forecast to weaken further before hitting Vietnam on Monday, forecasters said.

The hardest hit areas were the Southern Luzon and Bicol regions, the Philippines News Agency reported. Civil Defense administrator Glenn Rabonza said more than 13,000 people were affected by the storm.

The storm brought at least 85 millimeters (3.3 inches) of rain to Manila. The city of Daet, on the eastern coast, received 149 millimeters (5.8 inches) of rain, and Virac, which sits on an island that juts into the Pacific, received 72 millimeters (2.8 inches) of rain.

The first of the four typhoons to threaten the Philippines happened in late September, when Ketsana drenched the island nation with its heaviest rainfall in 40 years. Eighty percent of Manila flooded and more than 420 people died.